Advance File PhotoOn Sept. 16, 2009, Christopher Scott Caddell of Westerleigh was beaten and left to die on a walkway near an abandoned Bulls Head townhouse, above.

Edward McHugh, 21, helped lure Christopher Caddell to a vacant building early in the morning of Sept. 16, 2009, prosecutors said. He and Port Richmond resident Kevin Cocozello intended to rob the victim during a marijuana sale, said prosecutors.

Prosecutors allege the hulking 320-pound Cocozello hit Caddell on the back of the head with a baseball bat. Cocozello and McHugh then left the dying man on the desolate side walkway of an abandoned townhouse on Gary Court.

His body was discovered about 2 a.m.

The suspects pointed the finger at each other; however a spokesman for District Attorney Daniel Donovan said prosecutors’ investigation determined Cocozello delivered the fatal blows.

She alleges that emergency personnel initially dispatched to the scene failed to find her dying son, despite neighbors’ hearing his "crying out for help." Those responders were "only a few feet away" from her son, Ms. Caddell contends.

The victim was discovered at some point later, when police returned to the site, she maintains.